The downdraft FCRs feature a flatslide throttle operating on roller bearings in a smoothbore venturi. These are the ultimate racing carburetors for all downdraft applications.

Carburetors and Applications

Model	Years	Size	Carburetor part #	Price
CBR600	up to '90	33mm	16-445*	Discontinued
CBR600F2	'91 - 94	33mm	16-446*	969.06
CBR600F3	'95 - 98	33mm	16-444	969.06
CBR600F3	'95 - 98	35mm	16-465	994.00
CBR1100XX	all	41mm	16-592	1197.00

K&N filters for use with aftermarket Keihin FCR Carburetors

Model	Years	Carb size	Adapter #	Qty. req.	Price	Filter #	Qty. req.	Price
CBR600F	87-94	32, 33	021-211	4	$35.65	RU-3000/RU-3010	2 ea.	$34.66
CBR600F2	91-94	32, 33	021-211	4	$35.65	RU-2852	1	$66.52
CBR600F2/F3	91-97	35	021-212	4	$35.65	RU-2952	1	$148.20
CBR900RR	94-99	39, 41	021-212	4	$35.65	RU-2952	1	$148.20
CBR1100XX	all	39, 41	021-212	2	$35.65	RU-2952	1	$148.20